15BRCX-500-J23 Danaher
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The Danaher 15BRCX-500-J23 is part of the Dynapar Resolvers series and has a housing length of 1.0 inch with a weight of 4.5 ounces. It features an excitation frequency of 7 kHz, an input voltage of 4.25 Vrms, and a pilot diameter of 1.449 inches. The resolver offers a position error of 7 arc-min and a transformation ratio of 0.47.
Internal Product Review
The 15BRCX-500-J23 is a Dynapar resolver engineered for accurate motion feedback with a 7 kHz excitation frequency and 4.25 Vrms input voltage. Position error of 7 arc-min and null voltage of 20 mVrms support stable, repeatable signal quality in precision servo applications. This resolver stands out as a dependable choice for consistent feedback performance.
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Product Description:
The 15BRCX-500-J23 is a brushless resolver manufactured by Danaher within the Dynapar Resolvers series. This electromechanical sensor converts mechanical shaft rotation into two analog voltage channels that are phase-shifted by 90°, allowing servo drives and motion controllers to monitor absolute angular position even in high-vibration or electrically noisy industrial environments. By supplying real-time feedback without relying on digital optics, the unit maintains accuracy in applications such as robotic joints, packaging machinery, and spindle orientation systems.
An excitation carrier of 7 kHz energizes the primary winding, and the resolver accepts a reference amplitude of 4.25 Vrms while drawing only 55 mA. This modest power requirement minimizes thermal drift inside its 1.0-inch-long housing. The coupling between the primary and secondary windings has a transformation ratio of 0.47, so the secondary sine and cosine outputs appear at slightly less than half the reference magnitude, simplifying signal-conditioning circuitry. Electrical loading at the rotor output has a Zro magnitude of 42 + J72 Ω, combining resistive loss with inductive reactance to preserve carrier integrity across typical drive cable lengths.
The other secondary winding has an impedance of 70 + J107 Ω, offering additional isolation for redundant feedback channels. Under ideal alignment, the resolver generates only 20 mVrms of null voltage, supporting precise zero-crossing detection after calibration. The mechanical interface uses a pilot diameter of 1.449 in, and the position error does not exceed 7 arc-min, keeping control-loop deviation low for medium-accuracy servo axes. A rotor bore of 0.376 inches supports installation on compact shafts, while the 1.19-inch rotor length limits the required axial space. The overall mass of 4.5 ounces permits direct coupling without imposing a significant inertial load on the connected shaft.
